FLOOR PLAN NOTES PAYABLE—TRADE (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Floor plan notes payable—trade	$ 39.3	$ 71.7
Floor plan notes payable offset account	(2.0)	(6.8)
Total floor plan notes payable—trade, net	$ 37.3	$ 64.9